560812921 has 2 divisors, whose sum is σ = 560812922. Its totient is φ = 560812920.

The previous prime is 560812913. The next prime is 560812939. The reversal of 560812921 is 129218065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517107600 + 43705321 = 22740^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 560812921 - 2³ = 560812913 is a prime.

It is a super-2 number, since 2×560812921² = 629022264721104482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (560819921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280406460 + 280406461.

It is an arithmetic number, because the mean of its divisors is an integer number (280406461).

Almost surely, 2^560812921 is an apocalyptic number.

It is an amenable number.

560812921 is a deficient number, since it is larger than the sum of its proper divisors (1).

560812921 is an equidigital number, since it uses as much as digits as its factorization.

560812921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 560812921 is about 23681.4889945713. The cubic root of 560812921 is about 824.6557099064.

The spelling of 560812921 in words is "five hundred sixty million, eight hundred twelve thousand, nine hundred twenty-one".